Locomotive frame



June 30, 1931. J. G. BLUNT LOCOMOTIVE FRAME Filed July 12, 1928 3 Sheets-Sheet l -FIG.1:

I I Q Jime 30, 1931. J: G. BLUNT LOGOMO'IIVE FRAME Filed July 12 1928 3 Sheets-Sheet 2 jg'usssss I V %JV M June 30, 1931. J. G. BLUNT LOCOMOTIVE FRAME Filed July 12. 1928 s Sheets-Sheet 3 Patented June 30,1931

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JAMES G. BLUNT, SCHENECTADY, NEW YORK LOCOMOTIVE FRAME Application filed. July 12,

This invention relates, generally, to the frame structure of locomotive engines, and particularly to means fbr simplifying and strengthening the front ends thereof. The object of the invention is to provide means of such character, in which-the side frame members, the cylinder saddle, and the bumper beam, may'be'firmly and securely connected, and a truck centre plate or pin be incorporatedin the structure, said means being readily applicable instandard practice.

The improvement claimed is hereinafter fully set forth. t r r In the accompanying drawings: Figure 1 is a side view, in eleva'tion, of the forward portion of a locomotive, one of the cylinder castings being broken away, illustrating an application of the invention; Fig. 2, a plan or top view of the bumper casting and centre plate or pin; Fig. 3, a side view, in elevation, of the same; Fig. 4, a rear View, in elevation of the same; Fig. 5, a view, taken similarly to Fig. 2, illustrating a structural modificaiton; Fig. 6, a side view, in elevation, of the struc ture shown in Fig. 5, and; Fig. 7, a vertical transverse section, on the line a a of Fig. 6. V

In the practice of the invention, referring descriptively to the specific embodiment thereof which is herein exemplified, the structure embodies a pair of side frame members, 4, 4, extending integrally from the front pedestals forwardly of. a cylinder saddle, anl a cylinder saddle, 2, which'supports the front end of the locomotive boiler, 1, and to which the side frame members 4, and the cylinders, 2a, are connected in the ordinary manner. The forward portions of the side members are squared, rigidly'connected one to the other,

, and firmly braced, by a bumper casting, indicated, as an entirety, by the reference numher, 3, of the following construction.

Referring first to Figs. 1 to 4 inclusive, the bumper casting, 3, comprises, with its accessories, in an integral member, a main body plate, 3a, having a laterally and transversely extending vertical flange, 30, on its forward end, to which the bumper beam, 5, is connected, by bolts, 5a. Vertical transverse flanges,.3b, are formed on the main body plate, and, through said flanges, by means of 1928. Serial No. 292,191.

bolts, 3d, the bumper casting is secured to the .36, projecting from the side flanges, 3?). A

longitudinally extending plate, 3;, projects rearwardly from the main body plate, and supports a downwardly projecting cylindrical portion, 3g, serving as a centre pin for the leading truck of the locomotive. The plate 3f, is rigidly secured to flanges, 2b,- and 20, on the cylinder saddle, by bolts passing through holes, 265 and 2e, and is stiffened by ribs 3h, and 3m.

Figs. 5 to 7 illustrate a structuralmodification designed for application in cases in which the centre pin is so large astoprevent the application ofthe cylinder bolts, 2f, in which case the centre pin must be'made removable. Abum'per casting, 6, having a removable centre pin, comprises a main body plate, 6a, having a laterally extending vertical flange, 60, on its forward end, to which a bumper beam may be secured. Vertical lateral flanges, 6b, are formed on the sides of the main body plate, said flanges extending to points in rear of the cylinder fits,.4a, on the side frame members, 4, 4. Horizontal bolts, 6g, secure the flanges, 6b, to theside frame members, and vertical bolts, 6k,rig idly secure the bumper casting to the cylinder saddle, 2. a

A rectangular extension, depending from the main body plate, 6a, and having horizontal flanges, 6e, forms-a support for the centre pin,7, which is of the usual construction, except in being provided with projections, 7 b, which lip over the flanges, 6e, to relieve the lead on the connecting bolts, 7 a, resultant on the lateral resistance of the truck in passing curves. centre plate or pin, 6d, againstthe side flanges, 6b, and ribs, 670-, stiffen the main body plate, 6a. p

Centre pins are ordinarily connected to the cylinder saddles by bolts or studs, which are often inaccessible, resulting in insecure connections. In the present invention, the bumper casting carrying thecentre pin, is secured not only to the saddle casting but also to the frame members, thereby distrib- Ribs, 6f, brace-the uting the loads against the centre pin due to the lateral resistance of the truck, in passing curves. By extending the side flanges in rear of the cylinders, additional strength is imparted to the frame structure, at the rear ends of the cylinder fits of the frame, Where the frame is usually weakened.

In the specification and claims, the terms center pin and center plate have been used synonomously, and it is noted while usually the member on the truck is termed the center plate, and the engaging member on the locomotive body frame is called the center pin, nevertheless this center pin is also termed the center plate.

The invention claimed and desired to be secured by Letters Patent, is:

1. A structure for connecting locomotive side frames, comprising a main body plate having a front portion provided with vertical lateral flanges adapted to abut vertically against side frame members, a rear portion adapted to extend horizontally beneath and support a cylinder saddle; and an engine truck center pin depending from said rear portion.

2. A bumper casting for locomotive frames, comprising a main body plate, adapted to abut horizontally against a cylinder saddle; vertical side flanges, extending rearwardly in position to abut vertically against side frame members; a transversely extending vertical flange on its forward side, for connection to a bumper beam; and a downwardly extending projection on the main body plate, forming a support for the attachment of an engine truck centre pin.

3. In a locomotive, a pair of main side frame members; a cylinder saddle supported thereon; a structure separate from, and connecting, said main side frame members, comprising a main body plate and vertical lateral flanges, located between said main side frame members and beneath said saddle; means for detachably securing said flanges to said side frame members; and a body center plate depending from said transverse member beneath said saddle.

4. In a locomotive, a pair of main side frame members; a cylinder saddle supported thereon; a structure separate from, and connecting, said main side frame members, comprising a main body plate and vertical lateral flanges, located between said main side frame members and beneath said saddle; means for detachably securing said flanges to said side frame members; and a body center plate depending from said transverse member beneath said saddle from a point above the level of the bottoms of said side frame members.

5. In a locomotive, a pair of main side frame members; a structure separate from, and connecting, said main side frame members, comprising a main body plate and vertical lateral flanges, located between said main side frame members; means for detachably securing said flanges to said side frame members; and a body center plate depending from the bottom of said transverse member at a higher level than the bottoms of said side frame members.

6. In a locomotive, a pair of main side frame members; a cylinder saddle mounted on said side frame members and spanning the space between them; a structure below said saddle, separate from, and connecting, said main side frame members, comprising a main body plate and vertical lateral flanges located adjacent said main side frame members; means for detachably securing the flanges to said side frame members; and a body center plate depending from the bottom of said transverse member beneath said saddle at a higher level than the bottoms of said side frame members.

7. In a locomotive, a pair of main side frame members; a cylinder saddle supported thereon; a structure separate from, and connecting said main side frame members, comprising a main body plate and vertical lateral flanges, located between said main side frame members; and a portion directly beneath said cylinder saddle spaced from said side members; means for detachably securing the flanges to said side frame members; and a body center plate mounted on said spaced portion beneath said saddle.

8. In a locomotive the combination of a cylinder saddle; and an under frame comprising frame main side members, a transverse plate tying the side members together disposed in advance of the saddle, a plate extending from the first plate rearwardly thereof beneath the saddle for supporting the saddle and of less width than the distance between the side members providing open spaces between the sides of said extending plate and the respective side members, and a center pin depending from the extending plate.

JAMES G. BLUNT. 

